P30 RV with Truck Cab

[madd0nk3y]

So there is a low mileage P30 RV for sale locally low miles. It has a 454 and auto trans, and what appear to be 10 lug hubs with a double rear tandom axles. The body is damaged by water, could I place a pickup truck cab and front end on it? (Straight swap from a 86 crew cab?) I don't want to just throw my money away buying an RV that I can't convert. It is at an insurance auction lot so I can't just go in to look at it when I want.

Does anyone have any info on the chassis under these? Are they similar to the 1 ton trucks.
The first pic is the RV I'm looking at.

The second pic is what had me thinking these may share the same dimensions on the chassis?

The 3rd pic is from the fast and furious movie and this would be my goal. Yea I would have a flatbed on it.